Lamp wrench



L F. DESPRES LAMP WRENCH Filed June 21 1922 Louis E DBEPPEE Patented Sept. 11, 1923.

- UNETEE STATES LAMP WRENCH.

Application filed June 21,

To aZZ whom it may concern:

Be it known that 1, Lotus F. Dnsrnns, a citizen of the United States, residin at Lebanon, in the county of Grafton and btate of New Hampshire, have invented certain new and useful Improvements in Lamp l/Vrenches, of which the following is a specification, reference being had to the accompanying drawings. 7

This invention relates to wrenches and more particularly to wrenches for use on cylindrical objects, such as lamps.

An object of the invention is to provide a wrench of this character capable of being quickly adjusted to suit the diameter of the object on which it is used.

Another object of the invention is to provide a wrench of this character adapted to surround the object to be tightened, one portion of the wrench being provided with bearing means and the opposite portion arranged to engage said bearing means, said bearing means being adjustable according to the movement of the last mentioned por tion of the wrench.

It is a further object of the invention to provide a wrench of this character including a length of material arranged to surround the object, one end of the length being provided with a movable bearing member, said bearing member having anti-friction means arranged to be engaged by the opposite end of the length to substantially permit all por tions of the length to frictionally engage the object.

With these and other objects in view, the invention consists in the improved construction and arrangement of parts to be herein-- after more particularly described, fully claimed and lllustrated in the accompanying drawings, in which Figure 1 is a plan view of a lamp showing the invention applied;

Figure 2 is a fragmentary elevation of the wrench structure shown in Figure 1;

Figure 3 is a plan view of the wrench showing the handle disconnected; and

Figure at is a longitudinal sectional view showing the mountlng of the rollers and pivotal connection of the adjusting member.

Referring to the drawings, 5 designates a strip of resilient material relatively wide to permit said strip to firmly engage an object. The length of the strip may be made to correspond to the object on which the wrench is to be used.' The size of the wrench, how- 1922. eria No'.'5e9,772.

ever, does not interfere with the adjusting' means thereof.

The end portion f the strip is substan tially coiled to provide a hinge knuckle 7 -60 which extends laterally of the strip. A bearing and adjusting member 8 is provided, said member consisting; of a frame including side rails 9 and end. rails 10. The end rails 10 are secured at their extremities to the ex tremities of the side rail's,'while each of the side rails is substantially bentat its central portion so as to dispose the end portions of said side rails in divergent relation to each other and in this way dispose one end portion'of the frame substantially in "angular relationto theopposite end portion. Before the end rails 10 are enga ed with the side rails, a roller 11 is mounted on each end rail, longitudinal movement of the roller rel ative to the end rail being'prevented by 0011- tact of said roller wlth the end portion of,

the side rails. The rollers 11 are intended to correspondin length to the distance between the side rails, the width-of the frame being slightly greater than the width of the strip 5.

' In order to connect the adjusting and bearing frame to the'end portion 6 of-the strip, thecentral portion of each of the side rails is provided with an opening 12 adapted to receive the reduced ends of a pintle'13, said pin'tle extending through the hinge knuckles 7 of the end portion 6 of the strip andby means of which theframe 8 is pivotallyconnected to" the strip for oscillating movement. It will be noted by, thisarrangement that while each of the rollers 11 is substantially disposed in alignment with each other they are disposed to one side of the pivotal connection of the frame to the wrench or strip. The purpose of'this is to prevent contact of the end portions of the strip with each other in the operation of the wrench. The opposite end portion 13 of the strip is provided with a handle 14, said with the object to be'tightened or loosened and'the handle 14 passed under one roller 11 above the pintle 13 and beneath the other To assure a roller 11'', theoutersurface of the end portion 13 of the body member or strip being arranged to engage the rollers. When the handle is pulled by the operator it causes the rollers to firmly engage the end portion 13 of the strip and urge the entire strip into binding engagement with the object or work. lVhen the wrench is under strain,

, one end portion of the frame is disposed substantially at right angles to the body member 5, while the opposite end portion of the fra me' is' disposed substantially in alignment with the end portion 6. This permits the endportion 1 3 of the strip to extend'loutwardly away from the end portion 6 and at the same time permits one roller to holdfthe end portion 13 of the tremity of th e end por tion 13 which must necessarily pass through bearing and adjusting frame. Furthermore, by the use of the movable bearingand adjusting frame the adjustment may be made with rapidity ,and' accuracy and the wrench may be operated by a person with little strength. All of these features are possessed by a device which is compact and simple in construction.

What is claimed is z 1. A wrench of. the character described comprising a resilient strip, a frame pivoted the frame and engage the rollers in spaced I relation to the pivotal connection of the frame to the strip.

2. A wrench of the character described comprising a resilient strip having a hinge knuckle formed on one end thereof, a bean ing and adjusting frame including side and end members, the side members of the frame being bent at their central portions so as to dispose the end portions of said side members in divergent relation to each other, a bar extending between the central portions of the side members, said bar being disposed in the hinge knuckle of the st'rip,rollers carried by the end members of the frame substantially in alignment with each other, one of said rollers urging the opposite roller into engagement with the strip upon engagement of the opposite end of the strip with said rollers.

3. A wrench of the character described comprising a strip having a knuckle formed on one end, a rectangular frame having a cross bar at its middle, the cross bar being pivoted to one end of the strip, a portion of the frame on one side of the cross bar being angular with relation 'to the portion of the frame on the other side of the cross bar, the ends or the frame carrying rollers, that end of the strip 'opposite the end to which the frameis attached being formed with a haildle whereby said strip may be threaded beneath one of the rollers over the hinge beneath the other roller.

In testimony whereof I'hereunto aliix my signature.

LOUIS F. DESPRE'S. 

